/* ==========================================================
   星空体育 · Site Kit
   /assets/site.css
   版本：2026
   说明：全站共享基础样式
   ========================================================== */

/* ---------- 0. Design Tokens ---------- */
:root {
  /* 色彩体系 */
  --color-bg: #0a0e1a;
  --color-panel: #101828;
  --color-silver: #c0c8d0;
  --color-cyan: #00e5ff;
  --color-purple: #9a5cff;
  --color-gold: #ffd700;
  --color-text: #e8edf2;
  --color-muted: #7a8ba6;
  --color-line: rgba(192, 200, 208, 0.12);
  --color-line-cyan: rgba(0, 229, 255, 0.28);
  --color-line-purple: rgba(154, 92, 255, 0.24);

  /* 字体 */
  --font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-heading: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-accent: "Montserrat", "Noto Sans SC", sans-serif;

  /* 布局 */
  --container-width: 1200px;
  --header-z: 120;

  /* 效果 */
  --shadow-card: 0 0.5rem 2.5rem rgba(0, 0, 0, 0.28);
  --shadow-glow-cyan: 0 0 1.25rem rgba(0, 229, 255, 0.35);
  --radius: 0.75rem;
  --radius-sm: 0.375rem;
  --ease: 0.28s ease;
}

/* ---------- 1. Reset & Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  margin: 0;
  color: var(--color-text);
}

p, ul, ol, figure, dl, dd, blockquote {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

a {
  color: var(--color-cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover { color: var(--color-cyan); }

img, svg, video { display: block; max-width: 100%; height: auto; }

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

::selection {
  background: rgba(0, 229, 255, 0.25);
  color: var(--color-text);
}

/* ---------- 2. Utilities ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.625rem 1.125rem;
  background: var(--color-cyan);
  color: #000a14;
  font-weight: 700;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 0.25s ease;
  box-shadow: var(--shadow-glow-cyan);
}

.skip-link:focus {
  transform: translateY(0);
  outline: none;
}

.rule {
  height: 1px;
  border: 0;
  background: var(--color-line);
  margin: 2rem 0;
}

/* ---------- 3. Layout ---------- */
.container {
  width: min(100% - 2.5rem, var(--container-width));
  margin-inline: auto;
}

.main-content {
  scroll-margin-top: 6rem;
  outline: none;
}

.page-hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 2rem;
  border-bottom: 1px solid var(--color-line);
}

.page-title {
  font-size: clamp(1.875rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.page-desc {
  margin-top: 0.75rem;
  max-width: 40rem;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.breadcrumb {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 1.25rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  list-style: none;
}

.breadcrumb li { display: flex; align-items: center; gap: 0.375rem; }

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-muted);
  opacity: 0.5;
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb a:hover { color: var(--color-cyan); }

.content {
  font-size: 0.9375rem;
  color: var(--color-silver);
  max-width: 65ch;
}

.content h2,
.content h3 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  font-weight: 900;
}

.content p { margin-bottom: 1em; color: var(--color-silver); }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* ---------- 4. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z);
  background: rgba(10, 14, 26, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
}

.site-header .container { width: 100%; }

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.375rem 1.5rem;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
}

.header-top-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-muted);
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow: 0 0 0.75rem rgba(0, 229, 255, 0.8);
  animation: statusBlink 2.4s ease-in-out infinite;
}

@keyframes statusBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.header-top-season {
  font-family: var(--font-accent);
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-gold);
}

.header-main {
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.brand:hover { color: var(--color-text); }

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: 0.12em;
}

.brand-sub {
  font-family: var(--font-accent);
  font-size: 0.5625rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-cyan);
}

.header-rail {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(192, 200, 208, 0.05), rgba(192, 200, 208, 0.2) 70%, transparent);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease;
}

.nav-toggle:hover { border-color: var(--color-line-cyan); }

.nav-toggle-line {
  display: block;
  width: 1.375rem;
  height: 2px;
  background: var(--color-silver);
  position: relative;
  transition: background-color 0.25s ease;
}

.nav-toggle-line::before,
.nav-toggle-line::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-silver);
  transition: transform 0.25s ease;
}

.nav-toggle-line::before { top: -6px; }
.nav-toggle-line::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-line { background: transparent; }

.nav-toggle[aria-expanded="true"] .nav-toggle-line::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line::after {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.375rem;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.375rem 0;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-silver);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-cyan);
  box-shadow: 0 0 0.375rem rgba(0, 229, 255, 0.6);
  transition: width 0.25s ease;
}

.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { width: 100%; }

.nav-link[aria-current="page"] {
  color: var(--color-cyan);
}

.nav-link[aria-current="page"]::after { width: 100%; }

.header-cta {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

/* ---------- 5. Footer ---------- */
.site-footer {
  background: var(--color-panel);
  border-top: 1px solid var(--color-line);
  padding: 3rem 1.5rem 1.5rem;
}

.footer-grid {
  max-width: var(--container-width);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.25fr;
  gap: 2.5rem;
}

.footer-brand-link { margin-bottom: 1rem; }

.footer-note {
  max-width: 26rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.footer-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-cyan);
  margin-bottom: 0.875rem;
}

.footer-link-list,
.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link-list a {
  color: var(--color-silver);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-link-list a:hover { color: var(--color-cyan); }

.footer-contact-list li {
  color: var(--color-muted);
  font-size: 0.8125rem;
  overflow-wrap: anywhere;
}

.footer-meta {
  max-width: var(--container-width);
  margin-inline: auto;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.back-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 90;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  background: rgba(16, 24, 40, 0.88);
  color: var(--color-cyan);
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0.25rem 1.5rem rgba(0, 0, 0, 0.3);
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.back-top:hover {
  background: var(--color-cyan);
  color: #000a14;
  box-shadow: 0 0 1.5rem rgba(0, 229, 255, 0.45);
  transform: translateY(-2px);
}

.back-top[hidden] { display: none; }

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-silver);
  border-radius: 2rem;
  text-decoration: none;
  line-height: 1.4;
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
}

.btn-primary {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  color: #000a14;
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover {
  background: rgba(0, 229, 255, 0.85);
  border-color: var(--color-cyan);
  color: #000a14;
  box-shadow: 0 0 2rem rgba(0, 229, 255, 0.5);
}

.btn-ghost {
  border-color: var(--color-line);
  color: var(--color-silver);
}

.btn-ghost:hover {
  border-color: var(--color-purple);
  color: #c4a0ff;
  box-shadow: 0 0 1.25rem rgba(154, 92, 255, 0.2);
}

/* ---------- 7. Panels ---------- */
.panel {
  position: relative;
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--color-line);
  overflow: hidden;
}

.panel--alt { background: var(--color-panel); }

.panel-index {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-accent);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-muted);
  border-left: 2px solid var(--color-line-cyan);
  padding-left: 0.5rem;
  pointer-events: none;
}

/* ---------- 8. Section Head ---------- */
.section-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.section-flag {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-accent);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-cyan);
  border-left: 1px solid var(--color-line-cyan);
  padding-left: 0.5rem;
  flex-shrink: 0;
}

.section-kicker {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-purple);
  margin-bottom: 0.375rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.03em;
}

.section-note {
  margin-top: 0.625rem;
  max-width: 36rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* ---------- 9. Cards ---------- */
.card {
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.data-card {
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.data-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-line-cyan);
  box-shadow: 0 0.75rem 3rem rgba(0, 0, 0, 0.4);
}

.data-card-label {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.data-card-value {
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1.2;
  color: var(--color-text);
}

.data-card-value em {
  font-style: normal;
  color: var(--color-cyan);
}

.data-card-unit {
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-left: 0.125rem;
  font-weight: 400;
}

/* ---------- 10. Tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.1875rem 0.625rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: rgba(16, 24, 40, 0.6);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-silver);
  white-space: nowrap;
}

.tag--cyan {
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--color-cyan);
}

.tag--gold {
  border-color: rgba(255, 215, 0, 0.4);
  color: var(--color-gold);
}

.tag--purple {
  border-color: rgba(154, 92, 255, 0.4);
  color: #c4a0ff;
}

/* ---------- 11. Steps ---------- */
.steps {
  display: grid;
  gap: 1rem;
}

.step {
  position: relative;
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.step:hover {
  transform: translateX(0.375rem);
  border-color: var(--color-line-cyan);
  box-shadow: var(--shadow-card);
}

.step + .step::before {
  content: "";
  position: absolute;
  top: -1rem;
  left: 2rem;
  width: 1px;
  height: 1rem;
  background: var(--color-line-cyan);
}

.step-num {
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 1.875rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-cyan);
}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}

.step-desc {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

/* ---------- 12. Accordion ---------- */
.accordion {
  border-bottom: 1px solid var(--color-line);
}

.accordion summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  cursor: pointer;
  transition: color 0.2s ease;
}

.accordion summary::-webkit-details-marker { display: none; }

.accordion summary:hover { color: var(--color-cyan); }

.accordion summary::after {
  content: "+";
  font-family: var(--font-accent);
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--color-cyan);
  transition: transform 0.25s ease;
  flex-shrink: 0;
  line-height: 1;
}

.accordion[open] summary::after { transform: rotate(45deg); }

.accordion-body {
  padding: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* ---------- 13. Media & Starfield ---------- */
.media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background:
    radial-gradient(ellipse at 30% 20%, rgba(0, 229, 255, 0.08), transparent 55%),
    radial-gradient(ellipse at 70% 75%, rgba(154, 92, 255, 0.07), transparent 50%),
    var(--color-panel);
  overflow: hidden;
}

.star-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 22% 32%, rgba(192, 200, 208, 0.35), transparent 100%),
    radial-gradient(1px 1px at 68% 18%, rgba(192, 200, 208, 0.22), transparent 100%),
    radial-gradient(1.5px 1.5px at 42% 76%, rgba(0, 229, 255, 0.35), transparent 100%),
    radial-gradient(1px 1px at 88% 55%, rgba(255, 215, 0, 0.24), transparent 100%),
    radial-gradient(0.75px 0.75px at 12% 64%, rgba(154, 92, 255, 0.4), transparent 100%),
    radial-gradient(1px 1px at 55% 8%, rgba(255, 255, 255, 0.18), transparent 100%);
  pointer-events: none;
}

/* ---------- 14. Scroll Reveal ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

html.js [data-reveal="shown"] {
  opacity: 1;
  transform: none;
}

/* ---------- 15. Responsive ---------- */
@media (max-width: 1024px) {
  .header-main { gap: 1rem; }
  .nav-list { gap: 1rem; }
  .nav-link { font-size: 0.8125rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .header-rail { display: none; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 14, 26, 0.98);
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
    padding: 0.75rem 1.5rem 1.25rem;
    box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.4);
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
  }

  .site-nav[data-open] { display: flex; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-bottom: 0.875rem;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--color-line);
  }

  .nav-item:last-child { border-bottom: 0; }

  .nav-link {
    display: block;
    width: 100%;
    padding: 0.8125rem 0.5rem;
    font-size: 0.9375rem;
  }

  .nav-link::after { display: none; }

  .header-cta {
    width: 100%;
    justify-content: center;
    padding: 0.625rem 1rem;
  }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 2rem); }

  .header-main { padding: 0.75rem 1rem; gap: 0.75rem; }
  .header-top { padding: 0.375rem 1rem; }
  .header-top-season { display: none; }

  .brand-name { font-size: 1rem; }
  .brand-sub { font-size: 0.5rem; }
  .brand-mark { width: 2rem; height: 2rem; }

  .site-footer { padding: 2.5rem 1rem 1.25rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.75rem; }

  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }

  .section-head { flex-direction: row; gap: 0.75rem; }
  .section-flag { min-height: 3.5rem; }

  .step { grid-template-columns: 2.75rem 1fr; padding: 1.25rem; }
  .step + .step::before { left: 1.625rem; }

  .back-top {
    right: 1rem;
    bottom: 1rem;
    width: 2.5rem;
    height: 2.5rem;
  }
}

/* ---------- 16. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html.js [data-reveal],
  html.js [data-reveal="shown"] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .back-top { transition: none; }
}